/Engine/Source/Runtime/Engine/Classes/GameFramework/LightWeightInstanceStaticMeshManager.h
void GetLWIDataIndices ( [TArrayView](API\Runtime\Core\Containers\TArrayView)< const [FSMInstanceId](API\Runtime\Engine\Elements\SMInstance\FSMInstanceId) > InstanceIds, [TArray](API\Runtime\Core\Containers\TArray)< int32 > & OutDataIndices ) const